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VODA: magična pokretačica života

 

According to a NASA study published in the publication AGU 100, much of the world's drinking water sources are emptying much faster than they are filling.

Numerous other investigations suggest that water demand will rise by as much as 55% to the year 2050. Renewable annual fresh water supplies on Earth measure about 45,000 km3, which is enough for life for up to nine billion people. On the other hand, it is estimated that by 2025, over eight and a half billion people will live on Earth, a figure that is dangerously close to the upper limit of sustainability.

Although Croatia is among the thirty water-richest countries in the world, and analysts claim that at present there are no indications that there will be a shortage in the future, this does not mean that water should not be treated sparingly. Several simple tricks, such as using water left over from cooking pasta for watering plants, shortening shower time, turning off the water while washing your teeth and hands, and regularly changing and maintaining water supply systems, can dramatically reduce water consumption – and the savings will also appear in your home budget.

Water itself is an initiator, fascinating and magical. We have defined ten of the most interesting facts about water so we can all become motivated to be more careful with our use of this important fluid.

  1. Today, 70% of the Earth's territory is covered with water, but only one percent of this water is drinkable: most of the rest (97.4%) consists of sea water and contaminated fresh water.
  2. The supplies of fresh water on our planet are not evenly distributed: Asia has the most, and Australia the least. Nature has adapted to this: Australian koalas can live without water – they acquire liquid by eating eucalyptus leaves.
  3. From year to year the problem of access to water resources is getting bigger: in the last fifty years, 507 water over conflicts have occurred in the world.
  4. Research has shown that hot water will freeze sooner than cold, but science cannot explain why this would be! Reasons could involve re-cooling, evaporating, ice formation, and convection, or even the effect of diluted gases in warm and cold water..
  5. Do you divide the states of water into liquid, solid, and gaseous? This is not quite right: experts have identified as many as nineteen different states for water – five liquid and fourteen in frozen form.
  6. When freezing, water experiences fascinating transformations. At a temperature of 120° C it becomes stretchable. and at a temperature of -135° C it is converted into so-called glass water, a solid without a crystalline structure like glass.
  7. It is well known that water puts out fire. But did you know there is water that burns? In Azerbaijan, near the city of Astara, there is a spring called Yanar Bulag (literally translated as "burning spring"), whose water is so rich in methane that it will ignite when introduced to an open flame.
  8. The Krka River is one of twelve Croatian rivers whose waters supply hydroelectric power plants. The Krka hydroelectric power plant at the Skradinski Buk waterfalls, later called Jaruga, is the second oldest hydropower plant in the world, and the very first in Europe: on August 28, 1895, only three days after the first hydropower plant was opened in Niagara, the first Croatian full power system was launched, with which Šibenik was powered by electricity from the HE Krka through a 11 km long power line. The average annual water flow at Skradinski Buk is 55 m3/s.
  9. Almost five hundred of the world’s rivers are polluted. Croatian rivers, due to the abundance of their springs, or thanks to the underground sections of their streams, place us in the very top rank of countries with sufficient sources of drinking water. At the same time, rivers are especially sensitive to various forms of pollution and destruction – just a liter of oil can contaminate two million liters of water!
  10. The area of the NP "Krka" features a fascinating natural phenomenon – Torak, a spring in the form of a lake, on the left bank of the Čikola River. Although it is a spring, it seems more like a lake because of its round shape, so it is called a lake-spring. Its diameter is 150 m, the depth 30 m, and the spring itself is at the bottom of the “lake”. This karst spring provide clean and potable water that once supplied most settlements in the southeastern part of Šibenik-Knin County, and today it enchants with its beauty and the peace that it exudes. You can reach it on the Goriš-Torak trail, somewhat less than 2 km long.